Convulsing Royal Gramma

[fkshiu]

My Royal Gramma is upside down on the sand twitching and convulsing. It's like he's just been stung/stunned. He was fine and eating as recently as last night. Can't see any injuries on him and his colour still appears fine.

He's not dead - yet, but it doesn't look good. He's a big sucker for a gramma at almost 4" and I've had him for over 3 years. Haven't done anything out of the ordinary recently. Everybody else seems fine including the SPS except for the two little maximas who have been unhappy for a while now. I don't have any anemones or anything else that can sting.

It's a 6' (120 gallon) mixed reef w/a 6" hippo tang, 2 oc. clowns and diamond goby.

Any theories?